Abstract
To improve the dynamic stiffness of a hydrostatic bearing, two kinds of compensating element composed of an air chamber and a capillary restrictor are attached to its pocket and positively and dynamically controlled by an electric controller. For one compensation the shaft displacement is fed back, for the other the varying load is fed back.Fundamental equations are derived and linearized. Then the transfer function is obtained. For sinusoidal or stepped loading the effects of these elements are examined experimentally and theoretically.As a result it is found that the dynamic characteristics of a hydrostatic bearing can be improved markedly by these compensating elements.
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